Top Ten Reference Websites

Here are 10 most popular reference websites.

1. Wikipedia            - 350,000,000 monthly visitors
2. Yahoo! Answers - 85,000,000 monthly visitors
3. About                  - 78,000,000 monthly visitors
4. Answers              - 57,000,000 monthly visitors
5. eHow                   - 55,000,000 monthly visitors
6. Reference            - 40,000,000 monthly visitors
7. HubPages            - 28,500,000 monthly visitors
8. Squidoo               - 24,800,000 monthly visitors
9. Google Books      - 24,000,000 monthly visitors
10. Wikia                   - 23,100,000 monthly visitors